wandering idle

[H/O84]

I recently rebuilt my carb because of a stuck needle and it's no longer flooding but I'm now having an idle issue. Stock 84 Hurst olds 307, previous owner put in a power chip, not sure which one all I know is it requires 93 octane. The idle will wander a few hundred rpm normally between. 1200-1500 but when I let off the gas it trys to die out or it likes to idle close to 600 when I'm trying to go slowly up my driveway (slight incline) I have been able to solve the problem by doing one thing, disconnect the TPS. Took it around the block with it disconnect a few times and it runs amazing. Any idea why it is only good with the TPS off. I'm still trying to understand the computer system on this car, I believe it controls timing and the smog equipment and the tcc solenoid, what else does it do that's important?

 

[pontiacgp]

no engine codes?

 

[H/O84]

Do I need a scanner to read them? Ive only had one car with a computer controlled carb and that was soon made non ccc, seemed easier to put a holley on rather than mess with tuning the computer to my set up

 

[pontiacgp]

http://repairpal.com/gm-obd-I-code-chart

 

[H/O84]

I have no codes coming up, tried to move the car with the tps connected and it died as soon as I put it in drive. I then disconnected the tps and it was fine. I also have taken off the A.I.R. pump because it was in the way and the hoses were dry rotted.

 

[MrSony]

Why is your car iding so high? Even high idle is only really supposed to be 1200-1300. Warm idle in park is 800-1000. Your TPS might just be bad.

 

[H/O84]

When I take the TPS off it idles around 1000. How can I test to see if the TPS is bad?

 

[H/O84]

I don't know if this problem is related but the 1-2 shift seems delayed by a few seconds but 2-3 if nice amd quick.

 

[pontiacgp]

I have no codes coming up, tried to move the car with the tps connected and it died as soon as I put it in drive. I then disconnected the tps and it was fine. I also have taken off the A.I.R. pump because it was in the way and the hoses were dry rotted.

shouldn't disconnecting the TPS throw a code? By that chart the TPS code is 21 or 22, maybe the ECU is bad

 

[H/O84]

I thought it would but I couldn't get any codes to come up with the TPS connected and disconnected